离子扩散演示仪  

Ion diffusion demonstrator

作　　者：林高远 黄磊 高诗婕 王君杰 黄涵之 李朝阳 LIN Gao-yuan;HUANG Lei;GAO Shi-jie;WANG Jun-jie;HUANG Han-zhi;LI Chao-yang(Department of Physics,Hangzhou Normal University,Hangzhou 311121,China)

机构地区：[1]杭州师范大学物理系,浙江杭州311121

出　　处：《物理实验》2021年第3期42-45,共4页Physics Experimentation

基　　金：杭州师范大学2020国家级大学生创新创业训练计划项目(No.202010346033)。

摘　　要：利用激光在梯度溶液中弯曲传播的性质,制作了离子扩散演示仪.在该仪器中配制梯度溶液,可观察激光在梯度溶液中的曲线传播,演示海市蜃楼现象,揭示光的折射率与溶液浓度之间的关系.通过梯度溶液上表面位置的变化,可以定量反映溶液中离子扩散的快慢,定量测量离子的扩散系数.Based on the curved track of laser light in gradient solution,a demonstrator of sodium chloride ion diffusion was made.It is easy to prepare the gradient sodium chloride solution in the instrument.The curved track of laser light and the mirage phenomenon could be observed by using the instrument,which reflected the relation between the refractive index of light and the concentration of solution.The diffusion rate of sodium chloride ion could be measured by monitoring the height of gradient solution.The coefficient of diffusion could also be measured easily by this instrument.

关 键 词：离子扩散 扩散系数 梯度溶液 

分 类 号：O435.1[机械工程—光学工程]